Author:Wall, K; Watermeyer, R; Pirie, GDate:Sep 2012Supply chain management (SCM) regulations for public sector procurement of goods and services have greatly improved the transparency of procurement procedures, increased the opportunities for alternative suppliers, and reduced the potential ...Read more
Author:Labuschagne, FJJ; Ribbens, HDate:Jul 2014In South Africa, the integration of Non-Motorised Transport (NMT) facilities into spatial development and the streetscape has not yet received sufficient attention by the different spheres of government and their implementation agencies. ...Read more
Author:Baloyi, J; Bello-Ochende, T; Meyer, JPDate:Jul 2016In the study the comparison of irreversibilities was done when the wall condition of the combustor was changed from adiabatic to negative heat flux, for incoming air temperature of 400 K. The reactant mixture of solid pitch pine wood fuel and ...Read more
Author:Skosana, PJ; Van Vuuren, DS; Heydenrych, MDDate:Oct 2014One of the advantages of bubble columns is high heat transfer rates. High heat transfer is important in reactors when high thermal duties are required. An appropriate measurement of heat transfer coefficient is of primary importance for ...Read more
Author:Ribbens, H; Pillay, SDate:Jul 2008The current road safety situation in the City of Johannesburg is a major concern to the city authority. More than 120 000 road accidents (on average about 330 accidents per day) occur every year leading to about 600 fatal and 16 000 injury ...Read more
Author:Gxowa, Zizo; Chown, LH; Govender, GonasagrenDate:Oct 2017This work evaluates the effect of warm temperature (170-280°C) uniaxial compression on the deformation behaviour of SiC reinforced Metal Matrix Composites (MMCs). Green and sintered compacts (d=8mm, h=12mm) were produced by blending 2124-Al ...Read more
Author:Mvuma, GDate:Oct 2010The nexus of rapid population growth and improved socio-economic status of a country have been established as having a close correlation to increasing quantities of wastes generated per capita. Various studies show that waste harvesters ...Read more
Author:Oelofse, Suzanna HH; Nahman, AntonDate:Oct 2018It is estimated that 125 million tonnes of municipal solid waste is generated in Africa, of which only about 68 million tonnes are collected. Unsanitary landfilling and open dumping of the collected waste is the predominant waste disposal ...Read more
Author:Haywood, Lorren K; Kapwata, T; Oelofse, Suzanna HH; Breetzke, G; Wright, CYDate:Aug 2021Domestic solid waste is rapidly increasing due to accelerated population growth and urbanization. Improper waste disposal poses potential health risks and environmental concerns. Here, we investigated waste disposal practices in relation to ...Read more
Author:Nhamo, GDate:Nov 2008Great efforts have been made towards environmental and/ or waste management law reform and harmonisation in South Africa. However, much discord still remains. Such discord emerges from the Constitution and other environmental laws that fail ...Read more
Author:Afrika, M; Oelofse, Suzanna HH; Strydom, W; Mvuma, G; John, JDate:Oct 2010One of the major challenges facing municipalities in South Africa is ensuring that all households within their areas of jurisdiction are provided with a basic level of waste service (DEAT, 2007). Huge waste service backlogs still exists in ...Read more
Author:Oelofse, Suzanna HHDate:Jul 2011Waste pickers are common on landfills in South Africa, salvaging valuable items in order to earn a living. This presentation provide some insights on the activities of the pickers at landfills.Read more
Author:Nkosi, N; Muzenda, E; Zvimba, J; Pilusa, JDate:Apr 2013This paper reviews the proposed REDISA Plan which is meant to address the waste tyre problem. The study objectives were achieved through reviewing the REDISA gazetted Plan and interviewing REDISA personnel. The Plan does not address waste ...Read more
Author:Gouws, JF; Majozi, TDate:Aug 2008Wastewater minimisation in batch processes is becoming evermore important as
environmental legislation becomes more stringent and fresh water sources are becoming scarce. A methodology that explores the inherent storage possibilities for ...Read more
Author:Majozi, Nobuhle P; Salama, SM; Bernard, Stewart; Harper, DMDate:Oct 2012Freshwater resources are losing their quality posing a threat to human and aquatic life. Remote sensing has shown potential to monitor these resources. This study aimed to retrieve diffuse attenuation coefficient (Kd), to map euphotic depth ...Read more
Author:Lourens, Roger L; Patra, A; Hassim, Luqmaan; Sima, Faheem; Moodley, Avashlin; Sharma, PDate:Dec 2018We present a conversational model to apprise users with limited access to computational resources about water quality and real-time accessibility for a given location. We used natural language understanding through neural embedding driven ...Read more
Author:Moeletsi, ME; Walker, S; Hamandawana, H; Landman, WADate:Sep 2010Water deficiency during the growing period of summer crops is the main limiting factor for optimum crop production in most semi-arid areas of South Africa. Water requirements of the crop depend mainly on the nature and stage of the crop and ...Read more
Author:Meissner, RichardDate:May 2018Presented to a Seminar at the Unilever Centre for Environmental Water Quality, Rhodes University, Grahamstown, 9 May 2018Read more